You never mentioned what the fluid is. Is it possible there are entrained gases that are coming out of solution at the impeller?
In Florida ground waters there is a lot of dissolved H2S that tends to come out of solution when you start pumping.
Are you injecting any chemicals like chlorine...
BigInch:
What I'm trying to do is teach a group of civil engineers how to select a blower/compressor. Unfortunately, the curriculum for civil engineers covers only incompressible fluid dynamics and a bare minimum of thermodynmics. When you start talking density changes with compressible flow...
It seems to me, for a centrifugal blower (compressor) handling atmospheric air with a given impeller diameter, geometry, and speed, that there should be a unique performance curve for the machine of pressure rise versus mass flow through the machine similar to a pump curve. If this is correct...
I agree with BigInch's suggestion of drawing a line from the tank overflow hydraulic datum to the hydraulic datum at the receiving tank. However, I disagree with the statement that there will be no flow in the pipe segments that are above this line. In such a case, the hydraulic datum of the...
BigInch:
I agree with your assessment - probably should have said: "the flow will divide so that the energy gradelines are the same at the junction node of the tee" as you indicated.
Bduane
If the valve closes faster than (2*(pipe length))/(speed of sound in the medium) it is considered an instantaneous valve closure and the pressure rise (above the operating pressure) is easily calculated by the formula in most engineering texts on fluid transients.
If an accumulator is used it...
The flow will divide in the tee so the pressure drop from the tee to the end of the pipe is equal in both lines including any elevation difference. There will be one unique answer for any inlet flowrate. You need to be careful though if the pipes discharge at different elevations - you will...
